Structural and Dielectric Properties of Ca Doped Barium Iron Niobate

被引：13

作者：

Puri, Maalti ^{[1
]}

Bahel, Shalini ^{[1
]}

Narang, S. Bindra ^{[1
]}

机构：

[1] Guru Nanak Dev Univ, Dept Elect Technol, Amritsar, Punjab, India

来源：

INTEGRATED FERROELECTRICS | 2014年 / 158卷 / 01期

关键词：

X-ray diffraction; Barium iron niobate; loss tangent; dielectric constant; ELECTRICAL-PROPERTIES; BAFE0.5NB0.5O3; MICROWAVE; CERAMICS; PERMITTIVITY; PEROVSKITES; MOSSBAUER; SR;

D O I：

10.1080/10584587.2014.956591

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Ceramic materials with high dielectric constant are being used in many electric and electro-optics applications. Ca substituted barium iron niobate with general formula (Ba1-xCax) (Fe0.5Nb0.5)O-3 with x=0.0, 0.2, 0.4, 0.6, 0.8 and 1.0 were prepared by conventional solid state reaction method. Structural properties were investigated using X-ray diffraction and scanning electron microscope. Two types of phases were observed for 0.4 <= x <= 08. Dielectric constant and loss tangent were measured using impedance analyzer in the frequency range of 20Hz-1MHz at room temperature. Dielectric constant and loss tangent were found to decrease with increasing the frequency. A relatively good combination of dielectric constant and loss tangent was obtained for x=0.2 (epsilon(r)=1441 and tan delta=0.19) at 10 KHz.

引用

页码：13 / 21

页数：9

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